Impact-fuse.



No. 809,885. l-ATBNTED JAN. 9, 1906.

' L. ABENDROTH.

IMPACT FUSE.

APPLICATION FILED Muze, 1995.

D69# F l I a .5.a F

\\\ vAW 2 n0. d a a F DU nn. HFfef nzd g ...0 FFA M i. 4%- l l f Je Ea\\\\.F F\\\ af 3. @k H la /A .L m

UN rTED STATES PATENT oEE-roE.

' Louis ABENDRoTH, or ETTENsoHEm,

NEAR EssEaoN-THE-RUHE,

GERMANY. AssreNoR To EETED. KEUPP AKTIENGESELLSCHAFT, orEssEN-oN-THEEUHE., GERMANY., A

l Immo-fumes.

l N0. 809,885. l

Patented J an. 9, 1906.

Application iiled May 26, 1905. Serial No. 262,455.

:all whom t may concern.-

-Be it known that I, LOUIS ABENDROTH, a subject of the German Emperor,and a resi-v dent of Andreasstrasse,4 lRi'ittenscheid,

near Essen-on-the-R'uhr, Germany, have Jn` vented certain new and usefulImprovements in ImpactFuses, of which the following isa specification. IThe present inventionrelates to impactfuses provided with a securingdevice, whichis withdrawn by the centrifugal force during the rotationof theshot; and the object of the invention is to prevent the return. ofthe withdrawn securing device when t ye shot hits the target. The meanswhich I employ for the said purpose are of simple construc- I' tion andreliably hold the securing devicein the withdrawn osition, therebyexcluding the possibility'o blind shots.

Two embodiments i of the invention are shown as applied to a basefuse inthe accompanying drawings, in which- Figure l is an axial longitudinalsection of the secured fuse of one embodiment of the invention and partof the base of the shot. Fig. 2 is a view corresponding to Fig. 1, thesecuring device being withdrawn. Fig. 3 is a section on line 3 3 of Fig.1 seen from above.

Figs. 4 and 5 are detail views, and Fig. 6 shows a part oi a secondembodiment of the invention in a view corresponding to Fig.v 1.

- the fuse-body. The

The fuse-body B, Figs. 1 to 3 and Fig; 6, which is screwed into the baseA of the shot, provided with a central bore receiving a cylindric sleeveD (see also Fig. 4) and closed The sleeve D fits by the Aneedle-carrierC.

tightly within the fuse-body B and cannot move in the direction of theaxis, and it is held from rotation within the fuse-body by means of a.stud d2, which projects into a recess in cylindric primer-bolt E isslidably arranged in the sleeve D. In order to secure the primer-bolt inthe position of transport shown in the drawings, the followingarrangement is provided: The sleeve D has two perforations d,.locateddiamet-l rically opposite each otlierfand the cylinvdrie wall of theprimer-bolt E is provided with an annular groove e of rectangularcross-section.

The diameter of the perfo-- rations d corresponds to the width of the.groove e', (measured in the direction of the .ongitudinal axis of thefuse.) The location rom rebounding from 'the strips of the groove e issuch that the groove registers with the perforations d when theprimerbolt E is in the position of transport. When the fuse is in thesecured position, Figs. 1, 3, and 6, each oi the perforations cl',withthe adjacent parts of the annular groove e', receives a ball F,which is of same diameter as the periorations, while the depth of thegroove e is equal to the radius of the balls. The balls F, which rest onthe bottom of the groove e', prevent the primerebolt'E from movingtoward the needle during the transport of the fuse and also prevent thebolt tom oi' the fuse-body B) under the reaction of the shock caused bythe firing. The balls F constitute the moving part of the securingdevice to be withdrawn by 'the centrifugal torce. In orderl to providefor. the withdrawing of the balls, each of the perforations cl registerswith a perforation bin .the fusebody. The' perforations b are c oaxialwith the perforations d and are preferably of slightly greater diameterthan the perforations d. Furthermore, the wall of the bore of the baseA, which receives the fuse, is provided with an annular groove a. In theembodiment shown in Figs. l to 5 each of the balls F is retained in thesecuring position by the free end of a-sheet-metal strip Gr (See valsoFig. 5.) The strips G are integral with a ring G which is jammedbetweenthe sleeve D and theneedle-carrier C. The

portion of the strips that is located between the perforation d and thering Grests in a groove d3, Fig. 4', in the which corresponds Vto thethickness of the strips Gr. The thickness of the wall of the sleeve D issuch that when the balls are in the i securing position they lie againstthebottom of the groove e and the strips G and the strips assame thestraight position shown in Figs. 1 and 5. The strips are of such elasticmaterial and such dimensions that when the balls move outwardly underthe action ofthe centrifugal force the strips can be bent by the ballsto such an extent.that the balls can reach the position shown in Fig. 2and that the strips after they balls rebound to assume a lpositionsuch'as that shown in Fig. 2. In order to ermit of G being bent by itssupport (the bot! sleeve, the depth of have been bent by the the bals F,re-

IOC

cesses bzare provided in the fuse-bodyB, as

shown in Figs- 1 and 2. The free ends of the strips are. therefore asort of s ring-naps, which can swing on an axis whic is located m theroximity of the upper edge of the recesses Theoperation of the securingdevice is as follows: When the gun is discharged, the cetriiu al forcecauses the balls F to move outwardly to the position shown in Fig. 2.The primer-bolt E is thus released and the fuse is ready for ignition.During their outward movement the balls F bend the ends of thesheet-metal stri s G so far outwardly until the balls allow theelasticity of the strips to return the strips to the position shown inFig. 2. Inv this position the ,sheet-metal strips prevent the balls Ffrom returning to the securing position under the action of lateralshocks to secure the primerbolt E against forward movement. Such shocksmay be caused by the shot hitting the target sidewise. The sheet-metalstrips G thus form both a transport-securing means for the balls and ameans for preventing blind shots. A

In the embodiment shown in Fig. 6 the ring G and the strips G arereplaced by a flap H, which is hinged to the sleeve D in the prox-g`imity of the upper edge. of the recesses b2 and which is under theaction of a spring 71', that is secured to the fuse-body B. The mode ofoperation of this embodiment is similar to that of the embodiment shownin Figs. 1 to 5 with relation to the securing of the balls in theposition of transport, Fig. 6, and in the withdrawn position.

Without departing from the scope of my invention Imight substitute ashort bolt having round ends For the balls F.

Having described my invention, what I claim as new is- 1. In an imact-fuse, the combination with a longitudina y-movable primer-bolt, ofcen,- trifugally-operated securing means movable transversely of thebolt to release said bolt, and means projecting into the path of travelof said securingmeans and constructed to be moved out of the path ofsaid securing means, when said securing means is moved by c entrifugalforce, to Ipermit the securing'means to unlock the primer-bolt, and tomove again into the path of the securing means to prevent the saidsecuring means again locking the primer-bolt.

2. The combination Withthe centrifugallyoperated securing means of afuse, of means moved by the securing means during its outward travel andadapted to enter the path of travel of the securing means after thepassage of said securing means to prevent the return thereof.

3. The combination with the centrifugallyoperated securing device of afuse, ofmeansprojecting into the path of travel of the mov able part ofsaid'securing device and holding said part in the secured position saidmeans being adapted to be displaced by the movable part of the securingdevice lto permit the outward movement thereof and rebounding to securesaid part in its outer position.

The foregoing specification signed at Dsseldoxf this 13th day of May,1905.

LOUIS ABENDROTH.A

In presence of- PETER LIEBER, E. HERBER.

